[Tao_Moko]

Based on the current direction of our market - I would leave it alone. When the bubble bursts, altered cards(even preserved/restored) cards may have a scarlet letter of sorts. There's no correct answer and opinions will vary. Assuming your "holy grail" might end up in other family member hands when you're gone means setting them up for success to sell later is a consideration. If that's too morbid then maybe you stumble upon one at a flea market for a quarter and sell one off(lol). I approve of restoration when it's a necessity for preservation. That concept has not been adopted in our hobby. Beautiful piece and congratulations.